Fun with magnets by Bhagya

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Fun with magnets by Bhagya

  1. 1. AFTER SEEING THIS PICTURE CANYOU UNDERSTAND WHAT ARE WE GOING TO DO
  2. 2. FUN WITH MAGNETS
  3. 3. WHAT IS A MAGNET?• Magnets are made of materials that attract objects made of certain substances such as iron , cobalt, and nickel.
  4. 4. DIFFERENT TYPES OF MAGNETS• HORSESHOE MAGNET
  5. 5. • RING MAGNET
  6. 6. • CYLINDRICAL MAGNET
  7. 7. BAR MAGNET
  8. 8. POLES OF A BAR MAGNET• When iron fillings are brought close to a magnet, they do not stick evenly to all parts of the magnet. The stick more on certain parts of the magnet. These are called the poles of of the magnet. These are, by convention, called the NORTH POLE and the SOUTH POLE. The two poles cannot exist independently. That is, they always come in pairs. If we break a bar magnet in the middle, we would get two pieces,
  9. 9. each having a north pole and south pole.
  10. 10. REPULSION
  11. 11. REPULSION• WHEN POLES (N-N) OR (S-S) ARE KEPT TOGETHER THEY REPEL. THIS IS KNOWN AS REPULSION.
  12. 12. ATTRACTION
  13. 13. ATTRACTION• WHEN (N-S) ARE KEPT TOGETHER THEY ATTRACT. THIS IS KNOWN AS ATTRACTION.
  14. 14. USES OF MAGNETS• 1 ; Credit cards• 2; Television and computer moniters• 3; Computer hard discs and audio and video cassettes.
  15. 15. LOSS OF MAGNETISIM• A magnet can lose it’s magnetism when• Someone throws it from a height• Hitting with a hammer• Applying heat

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